{ "currentVersion": 10.41, "id": 0, "name": "VMS Transit Density 2015-2016 (>=5 knots)", "type": "Raster Layer", "description": "This dataset broadly characterizes the density of commercial fishing transit activity regardless of fishery, or if declared out of fishery, in the northeastern U.S. based on fishing vessels with Vessel Monitoring Systems (VMS) from 2015 to 2016. The National Marine Fisheries Service (NMFS) describes VMS as a satellite surveillance system primarily used to monitor the location and movement of commercial fishing vessels in the U.S. This dataset was created using VMS position records for vessels travelling at a speed of greater than five knots, which was the speed minimum used to identify vessels only engaged in transit activity. Raw VMS data from NMFS were processed into geospatial point products and analyzed to create density grids. The point data were filtered to remove vessel positions which did not meet the \"Rule of Three\" criteria required by NMFS due to data confidentiality. More information on the Rule of Three is available within the metadata. Data values are standardized and are best interpreted qualitatively. An absence of data does not indicate an absence of fishing transit activity.", "geometryType": null, "copyrightText": "National Marine Fisheries Service (NMFS) Vessel Monitoring Systems (VMS), RPS", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "defaultVisibility": false, "extent": { "xmin": -9171443.113136245, "ymin": 2796237.89830951, "xmax": -7200195.248540637, "ymax": 5858727.378669339, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeNone", "displayField": "", "typeIdField": null, "fields": null, "indexes": [], "relationships": [], "canModifyLayer": false, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query", "supportsStatistics": false, "supportsAdvancedQueries": false, "supportedQueryFormats": "JSON, AMF, geoJSON", "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": false, "supportsOrderBy": false, "supportsDistinct": false, "supportsPagination": false, "supportsTrueCurve": false, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true } }